A wildfire in Yosemite National Park that's threatening some of the world's oldest giant sequoia trees has triggered air quality alerts and evacuation orders after growing five-fold over the weekend.
By the numbers: The Washburn Fire that was first reported last Thursday near the Washburn Trail in the Mariposa Grove area of the park had burned across at least 2,044 acres by Sunday evening, according to InciWeb, an interagency website that tracks wildfires.
